Tony,

Three additional suggestions. Gunnar Jonny's site has a large volume styles converted from Yamaha, Korg, and Solton. Don't forget to check older KN models as well as the KN6000 folder. There is particularly a large selection for the KN5000 which will work in later keyboards.
http://home.c2i.net/gjgotaas/

Note that Gunnar's styles are all free.

Next, try Algo-rhythm. Not free, but some excellent quality styles and you can hear samples before you buy.
http://www.algo-rhythm.com/

Last, try Style Station with styles by Mike Tyo. Excellent quality, but limited selection.
http://www.stylemagic.com/

Hope you find something useful to you from these links.

Lanny